/Engine/Source/Developer/AssetTools/Public/AssetViewUtils.h
Returns true if the specified folder name in the specified path is available for folder creation
namespace AssetViewUtils { bool AssetViewUtils::IsValidFolderPathForCreate ( const [FString](API\Runtime\Core\Containers\FString) & FolderPath, const [FString](API\Runtime\Core\Containers\FString) & NewFolderName, [FText](API\Runtime\Core\Internationalization\FText) & OutErrorMessage ) }